During deploy, technicians seal duct leaks and balance registers, improving airflow, reducing sizzling and bloodless spots

https://www.mediafire.com/file/4fr6vhqoiwcqo4h/pdf-95051-49169.pdf/file

During setting up, technicians seal duct leaks and balance registers, getting better airflow, slicing hot and chilly spots, and boosting furnace efficiency greatly.